Sagot :
Réponse:
e) (-14x +5) - (4x -7)(-14x +5)
= (-14x +5)(1 -(4x -7)
= (-14x +5)(1 -4x +7)
= (-14x +5)(8 -4x)
= (-14x +5) ×4(2 -x)
= 4(-14x +5)×(2 -x)
Bonjour,
Factoriser:
(-14x+5)-(4x-7)(-14x+5)= (-14x+5)(1-4x+7)= (-14x+5)(-4x+8)= 4(-14x+5)(x+2)
= -4(14x+5)(x-2)
NB: (-4x+8)= 4(-x+2)= -4(x-2)